Question

if 7th term of an AP is 1/9 9th term of an AP is 1/7 find its 63th term

Answer 1

This is your answer that I have created on my 'Cheetah Keyboard' .

PLEASE MARK MY ANSWER AS BRAINLIEST

Answer 2

T7 = 1/9
a+6d = 1/9
a = (1/9)-6d -------------(1)

T9 = 1/7
a+8d = 1/7
a = (1/7)-8d --------------(2)

(1/9)-6d = (1/7)-8d
8d-6d = (1/7)-(1/9)
2d = 2/63
d = 1/63

a = (1/9)-6d
a = (1/9) - (6/63)
a = 1/63

T63
= a+62d
= (1/63) + 62×(1/63)
= (1/63)+(62/63)
= 63/63
= 1
====================
Hence the 63rd term of the given A.P is 1

Hope it helps you
Please mark me as brainliest
●●●
✌✌✌